Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 44 4 2015 04 15 588 9 Ning Li School of Nursing, Health Science Center, Xi'an Jiaotong University, Xi'an, China. Bin Li Traditional Chinese Medicine Hospital, Xi'an, China. Juanhua Dou Xi'an Health School, Xi'an, China. Xueliang Wang Dept. of Public Health, College of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, China. 2015 10 14 No Abstract https://ijph.tums.ac.ir/index.php/ijph/article/view/3573 https://ijph.tums.ac.ir/index.php/ijph/article/download/3573/3248